Dear Scotty and Fans,
Love everything you guys do, keep it up.
I've got a 1997 GMC Sierra K1500 with around 140k miles on it. To my knowledge, the fuel pump, AC compressor, heater core, and automatic transmission have all been replaced within the past few years. It's had a lot of old parts replaced and is still going strong.
Recently I've been having some sort of electrical problem when driving with my headlights on. There's no flickering of any sort and the battery gauge doesn't move, but over time the panels on the dash will begin to heat up to the point of it being almost too hot to touch.
At first, I thought it was the radio going bad, as it was giving off more heat than anything else. I replaced the radio and that seemed to fix it for a while. Recently I've noticed the issue coming back, the new radio works perfectly and doesn't heat up very much under heavy use.
I've noticed most of the heat coming from the climate controls right under the radio, and the little light selector on the other side of the steering wheel.
I really have no idea at this point what the problem could be, and would really appreciate some advice.